216575507 has 2 divisors, whose sum is σ = 216575508. Its totient is φ = 216575506.

The previous prime is 216575459. The next prime is 216575531. The reversal of 216575507 is 705575612.

216575507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216575507 - 2⁸ = 216575251 is a prime.

It is not a weakly prime, because it can be changed into another prime (212575507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108287753 + 108287754.

It is an arithmetic number, because the mean of its divisors is an integer number (108287754).

Almost surely, 2^216575507 is an apocalyptic number.

216575507 is a deficient number, since it is larger than the sum of its proper divisors (1).

216575507 is an equidigital number, since it uses as much as digits as its factorization.

216575507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 216575507 is about 14716.5045781938. The cubic root of 216575507 is about 600.5324042882.

The spelling of 216575507 in words is "two hundred sixteen million, five hundred seventy-five thousand, five hundred seven".